"Real Unix" only consists of the AT&T Bell Labs lineage and the early BSD bloodline. What is known by "Linux" is nothing but a GNU userspace with a questionable Unix-like kernel masquerading as the real thing. When people try to argue that Ubuntu is not real Unix, while saying that macOS is, I can't help but cringe because they are just as fake Unix as Ubuntu (plus the Apple tax pretentiousness). Real Unix feels MINIMAL, POWERFUL and somewhat ANGRY at wasted cycles. Fake Unix is bloated, hand-holding and a failed attempt to turn a multi-user timesharing system into a glorified smartphone. Some examples of REAL UNIX are Research Unix v7, 4.3BSD, SunOS 4, AIX, HP-UX and FreeBSD (the only real Unix from the modern open source scene). Some examples of FAKE UNIX are GNU/Linux, Android, macOS, Plan 9 and anything that needs systemd. UNIX BELONGS TO BELL LABS AND THE BERKELEY CSRG NOT TO HOBBYISTS, CORPORATIONS, OR ANY OTHER MAINSTREAM DESKTOP OPERATING SYSTEM.

Network allows us to communicate, collaborate, and interact in ways we never did before. Ther are many key structures and performance-related characteristics referred referred to when discussing networks.

• Topology - There are physical and logical topologies
• Speed - Measure of the data rate in b/s of a given link in the network
• Cost - Indicates the general expense for purchasing of network components, and installation and maintenance of the network

• Ways of communication using networks
  • Texting
  • Social Media
  • Collaboration Tools
  • Blogs
  • Wikis
• Podcasting